{ config, pkgs, lib, ... }: let
  mod = "mod4";
  left = "h";
  right = "l";
  down = "j";
  up = "k";

  background = "${config.xdg.dataHome}/wayland/desktop";
  wayland-scripts = pkgs.callPackage ../../pkgs/wayland-scripts {};
  cwall = "${wayland-scripts}/bin/cwall";

  bemenu = "${pkgs.bemenu}/bin/bemenu-run --prompt ' '";
  foot = lib.getExe config.programs.foot.package;
  i3status = lib.getExe config.programs.i3status.package;
  swaylock = lib.getExe config.programs.swaylock.package;

  nnn = lib.getExe pkgs.nnn;
  wpctl = "${pkgs.wireplumber}/bin/wpctl";
  brightnessctl = lib.getExe pkgs.brightnessctl;
  mako = lib.getExe config.services.mako.package;
  firefox = lib.getExe config.programs.firefox.finalPackage;

  font = config.global.font.sans.name
    + lib.optionalString (config.global.font.sans.size != null)
      " " + builtins.toString config.global.font.sans.size;
in {
  imports = [
    ./mako.nix
    ./theme.nix
    ./bemenu.nix
    ./swayidle.nix
    ./swaylock.nix
    ./i3status.nix
  ];

  home = {
    packages = [
      pkgs.wl-clipboard
      pkgs.nnn
      pkgs.bemenu
      pkgs.swayidle
      pkgs.brightnessctl
      wayland-scripts
    ];

    sessionVariables.XDG_CURRENT_DESKTOP = "sway";
  };

  wayland.windowManager.sway = {
    enable = true;
    package = pkgs.sway.override { enableXWayland = false; };

    # checkConfig fails if ${background} doesn't exist
    checkConfig = false;
    config = null;
    settings = {
      bar = {
	inherit font;
	position = "top";
	status_command = i3status;
	colors = {
	  background = "#000000";
	  focused_workspace = "#000000 #000000 #ffba08";
	  inactive_workspace = "#000000 #000000 #cde4e6";
	};
      };

      bindgesture = {
	"swipe:left" = "workspace next";
	"swipe:right" = "workspace prev";
	"swipe:down" = "exec ${swaylock}";
	"swipe:up" = "exec ${cwall}";
      };
      input = {
	"type:touchpad" = {
	  dwt = "enabled";
	  tap = "enabled";
	};
	"type:keyboard" = {
	  repeat_rate = 100;
	  repeat_delay = 250;
	};
      };

      bindsym = {
	# basics
	"${mod}+q" = "kill";
	"${mod}+shift+c" = "reload";
	"${mod}+shift+e" = ''
	  exec swaynag -t warning -m 'Do you really want to exit sway?' \
	      -B 'Yes, exit sway' 'swaymsg exit'
	'';

	# workspaces
	"${mod}+1" = "workspace number 1";
	"${mod}+2" = "workspace number 2";
	"${mod}+3" = "workspace number 3";
	"${mod}+4" = "workspace number 4";
	"${mod}+5" = "workspace number 5";
	"${mod}+6" = "workspace number 6";
	"${mod}+7" = "workspace number 7";
	"${mod}+8" = "workspace number 8";
	"${mod}+9" = "workspace number 9";
	"${mod}+tab" = "workspace back_and_forth";
	"${mod}+shift+1" = "move container to workspace number 1";
	"${mod}+shift+2" = "move container to workspace number 2";
	"${mod}+shift+3" = "move container to workspace number 3";
	"${mod}+shift+4" = "move container to workspace number 4";
	"${mod}+shift+5" = "move container to workspace number 5";
	"${mod}+shift+6" = "move container to workspace number 6";
	"${mod}+shift+7" = "move container to workspace number 7";
	"${mod}+shift+8" = "move container to workspace number 8";
	"${mod}+shift+9" = "move container to workspace number 9";
	"${mod}+c" = "splitv";
	"${mod}+v" = "splith";

	# layout
	"${mod}+${left}" = "focus left";
	"${mod}+${down}" = "focus down";
	"${mod}+${up}" = "focus up";
	"${mod}+${right}" = "focus right";
	"${mod}+shift+${left}" = "move left";
	"${mod}+shift+${right}" = "move right";
	"${mod}+shift+${down}" = "move down";
	"${mod}+shift+${up}" = "move up";
	"${mod}+f" = "fullscreen";
	"${mod}+s" = "layout stacking";
	"${mod}+t" = "layout tabbed";
	"${mod}+e" = "layout toggle split";
	"${mod}+shift+space" = "floating toggle";
	"${mod}+r" = "mode resize";

	# scratchpad
	"${mod}+shift+minus" = "move scratchpad";
	"${mod}+minus" = "scratchpad show";

	# exec
	"${mod}+return" = "exec ${foot}";
	"${mod}+o" = "exec ${bemenu}";
	"${mod}+w" = "exec ${firefox}";
	"${mod}+n" = "exec ${foot} -- ${nnn} -decC";

	XF86MonBrightnessDown = "exec ${brightnessctl} set 1%-";
	XF86MonBrightnessUp = "exec ${brightnessctl} set 1%+";
	XF86AudioLowerVolume = "exec ${wpctl} set-volume @DEFAULT_AUDIO_SINK@ 5%-";
	XF86AudioRaiseVolume = "exec ${wpctl} set-volume --limit 1.5 @DEFAULT_AUDIO_SINK@ 5%+";
	XF86AudioMute = "exec ${wpctl} set-mute @DEFAULT_AUDIO_SINK@ toggle";
	XF86AudioMicMute = "exec ${wpctl} set-mute @DEFAULT_AUDIO_SOURCE@ toggle";
      };

      mode.resize.bindsym = {
	${left} = "resize shrink width 10px";
	${right} = "resize grow width 10px";
	${down} = "resize grow height 10px";
	${up} = "resize shrink height 10px";
	return = "mode default";
      };

      exec = [ mako ];
      gaps.inner = 10;
      default_border.pixel = 2;
      floating_modifier = "${mod} normal";
      output."*".background = "${background} fill";
      "client.focused" = "#4c7899 #285577 #ffffff #285577";
    };
  };
}